Abstract
The possibility of formation of detonation nanodiamond (DND) protostructures in the plasma of a chemical reaction zone in the form of a fractal carbon network with spatially ordered carbon nuclei in its nodes is shown; the density of the nodes should be in the range of 2.5–3.2 g/cm3. Upon passing through the Chapman–Jouguet plane, the plasma carbon formations crystallize into DND or amorphize. Detonation nanodiamond is formed at a distance of one third to three quarters of the charge diameter from the detonation wave front. Under optimal conditions, around 20 wt % of total explosive carbon is utilized for the formation of DND.
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This study was partially supported by the Russian Foundation for Basic Research (project no. 18-29-19112).
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Translated by O. Kadkin
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Dolmatov, V.Y., Ozerin, A.N., Vehanen, A. et al. On the Mechanism of Formation of Detonation Diamonds. J. Superhard Mater. 43, 330–335 (2021). https://doi.org/10.3103/S1063457621050038
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DOI: https://doi.org/10.3103/S1063457621050038